linux-kernel - [tip:perf/core] tools build: Move dependency copy into function

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Message-ID: <tip-275e2d95591e2714d6b541d4e26959381d6b2705@git.kernel.org>
Date:	Tue, 29 Sep 2015 01:40:06 -0700
From:	tip-bot for Jiri Olsa <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	namhyung@...nel.org, linux-kernel@...r.kernel.org,
	a.p.zijlstra@...llo.nl, jolsa@...nel.org, acme@...hat.com,
	dsahern@...il.com, tglx@...utronix.de, mingo@...nel.org,
	hpa@...or.com
Subject: [tip:perf/core] tools build: Move dependency copy into function

Commit-ID:  275e2d95591e2714d6b541d4e26959381d6b2705
Gitweb:     http://git.kernel.org/tip/275e2d95591e2714d6b541d4e26959381d6b2705
Author:     Jiri Olsa <jolsa@...nel.org>
AuthorDate: Wed, 23 Sep 2015 12:33:59 +0200
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 28 Sep 2015 15:50:55 -0300

tools build: Move dependency copy into function

So it's easier to add more functionality in the following commit.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1443004442-32660-5-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/build/Build.include | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/tools/build/Build.include b/tools/build/Build.include
index 4c8daac..851c420 100644
--- a/tools/build/Build.include
+++ b/tools/build/Build.include
@@ -55,14 +55,19 @@ make-cmd = $(call escsq,$(subst \#,\\\#,$(subst $$,$$$$,$(cmd_$(1)))))
 any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard $^),$^)
 
 ###
+# Copy dependency data into .cmd file
+#  - gcc -M dependency info
+#  - command line to create object 'cmd_object :='
+dep-cmd = cat $(depfile) >  $(dot-target).cmd; \
+          printf '%s\n' 'cmd_$@ := $(make-cmd)' >> $(dot-target).cmd
+
+###
 # if_changed_dep  - execute command if any prerequisite is newer than
 #                   target, or command line has changed and update
 #                   dependencies in the cmd file
 if_changed_dep = $(if $(strip $(any-prereq) $(arg-check)),         \
 	@set -e;                                                   \
-	$(echo-cmd) $(cmd_$(1));                                   \
-	cat $(depfile) > $(dot-target).cmd;                        \
-	printf '%s\n' 'cmd_$@ := $(make-cmd)' >> $(dot-target).cmd)
+	$(echo-cmd) $(cmd_$(1)) && $(dep-cmd))
 
 # if_changed      - execute command if any prerequisite is newer than
 #                   target, or command line has changed
--
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